<template>
  <div class="about">
    <h1>404</h1>
    <div>page Not found</div>
    <div style="border: 1px solid;">
      <div class="demo1"></div>
      <div class="demo2"></div>
    </div>
  </div>
</template>

<style scoped>
.demo1,.demo2 {
  display: inline-block;
  width: 200px;
  height: 100px;
  background-color: pink;
}
.demo2 {
  background-color: aqua;
}

</style>
